[backend]将testdata/下的测例替换为了赛方测试用例，更新了测试脚本

testdata/h_functional/02_ret_in_block.sy

@@ -0,0 +1,53 @@
+int main(){
+	int a = 893;
+	int b = 716;
+	{
+		int a = 837;
+		a = a + 128;
+		b = b + a;
+		{
+			int b = 241;
+			a = a + b - 412;
+			{
+				int a = 771;
+				b = b + a -18;
+				a = b + 66;
+			}
+			b = b + a - 33;
+			a = b - 55;
+            {
+                return (a + b) % 21;
+            }
+            
+		}
+		a = b + a - 97;
+		b = (b - a) % 62;
+        {
+             return (a + b) % 17;
+        }
+        return (a + b) % 13;
+	}
+	a = (b * a) % 83;
+	b = a + b - 771;	
+	return (a + b) % 11;
+}
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+